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Title: Probing enhanced lithium-ion transport kinetics in 2D holey nanoarchitectured electrodes

Journal Article · · Nano Futures
 [1];  [2];  [1];  [1];  [2];  [3];  [4];  [2];  [5]; ORCiD logo [2]; ORCiD logo [1]
  1. Univ. of Texas at Austin, Austin, TX (United States)
  2. SUNY-Stony Brook Univ., Stony Brook, NY (United States)
  3. Univ. of Pennsylvania, Philadelphia, PA (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. SUNY-Stony Brook Univ., Stony Brook, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
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Nanostructuring has been proved effective towards improving many energy storage and conversion devices, and is feasible for a wide range of materials. In particular, secondary nanoarchitectured materials exhibit collective advantages compared with nano-sized primary building blocks. Despite the manifold efforts in designed nanoarchitectures and synthetic routes, the underlying ion diffusion kinetics and phase transformation behaviours within nanoarchitectures still remain less explored. Herein, we probed enhanced lithium-ion transport behaviours using 2D holey zinc ferrite (ZFO) nanosheets as a model material, to demonstrate how self-assembled 2D holey nanoarchitectured electrodes can feature efficient ion diffusion channels, robust yet continuous electron transfer framework, and enlarged surface area, contributing to the superior performance over the ZFO nanoparticles without secondary structures. By revealing kinetic parameters through combined spectroscopic measurements and electrochemical techniques, our study manifests increased lithium-ion diffusion coefficients, higher capacitive charge storage contribution and reduced charge transfer impedance in holey nanosheets compared to randomly aggregated nanoparticles. Furthermore, our results promote deeper understanding of significantly enhanced electrochemical energy storage properties of these 2D holey nanoarchitectured electrodes resulted from more uniform and complete phase transformation and better active material utilization.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Mesoscale Transport Properties (m2mt); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704
OSTI ID:
1498276
Report Number(s):
BNL-211322-2019-JAAM
Journal Information:
Nano Futures, Vol. 2, Issue 3; ISSN 2399-1984
Publisher:
IOP ScienceCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Cited By (3)

Ultrafast Intercalation Enabled by Strong Solvent–Host Interactions: Understanding Solvent Effect at the Atomic Level journal November 2019
Evaporation‐Induced Vertical Alignment Enabling Directional Ion Transport in a 2D‐Nanosheet‐Based Battery Electrode journal January 2020
Ultrafast Intercalation Enabled by Strong Solvent-Host Interactions: Understanding Solvent Effect at the Atomic Level journal October 2019

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25 ENERGY STORAGE
Li-ion battery
transport kinetics
nanostructuring
2D holey nanosheet
energy storage